New and unused The H10-76 Low Impedance Military Headset is a favorite of the U.S. Armed Forces, NATO and most airborne command centers.This headset is designed to work with low impedance systems on helicopters (it's fit with a U-174/U plug). Features a certified noise reduction rating of 24 dB, gel ear seals, double foam head pad, and flexible mic. Undercut Comfort-Gel Ear Seal for Improved Comfort. DC-87 Low Impedance Microphone Most popular noise attenuating headset ever produced for use with military radios. Standard headset of the U.S. Air Force, NATO and most airborne command centers. AWACs, under command of NATO and the United States, use the H10-76 both in the cockpit and the communication operations. Headset of choice of M.A.T.S. pilots. Also used in ground support operations. Coiled cord terminates in a U-174/U Plug.